Pivot-window.



No. 833,795. PATENTED 001. 23, 1906.

L. M. NEABREY.

PIVOT WINDOW.

APPLICATION FILED APR.,1-7, 1905.

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To all whom, it may concern.-

" UNITED STATES PATENT OFFICE.

LEONARD M. NEABREY. OF CINCINNATI, OHIO.

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Specification of Letters Patent.

Application filed April 17. 1905- Serial No. 255,942.

Be it known that I, LEONARD M. NEABREY,

- a citizen of the United States of America,

. and a resident of llton, State of Ohio, have invented. certain Cincinnati, county of Hamsash either to swing or to slide in the frame.

This object is attained by the means described in the specification and illustrated in inch.

showing the are likewise the drawings, in which- Figure l is a front elevation of art of a windowframe and sash, part of t is frame and lower sash, being cut away to show the means of pivoting embodying my invention. Fig. 2 is a central sectional view of the frame, sashes in their closed position, the dotted lines showing the lower sash swung upon its ivot. Fig. 3 is a similar view show ing the ower sash pushed up to its upper position. Fig. 4 is a' horizontal sectional View, taken upon line w m of Fig. 3, upon an enlarged scale. Fig. '5 is a detail vertical sectional View of a lower sash and frame, the full line showing the position of the ball when the sash. is in its lowermost position,

and the dotted line showing the position of the same when the sash is somewhat raised. Fig. 6 is a detail perspective viewof the weather-strip.

I have illustrated my invention as applied to. a metal window; but the same could be applied to those of wood. The frames A have vertical grooves c' a formed in them,- these ooves being made, preferably, semicircular. he moldings and the parting-strip ordinarily found in window-frames are omitted from. my frame. The upper and lower sashes B B have grooves l; b to register with the grooves in the sides of the frame. The grooves 11 6 preferably semicircular in cross section and form, with the grooves in the frames, cylindrical ways. Secured to the sides of the sashes at directly opposite points in each are two plates 0 a 1n the lower sash and 0* c in the upper sash. These plates are placed. a distance apart equal. to the diameter of the ways formed by the grooves in the sash and the frames, generally approximating one l/Vithin the groove 0/ is secured a bracket 11, which register" with the lower of the plates 1: of the lower sash in its-lowermost position sash.

in the frame, a similar bracket being secured at the opposite side of the frame. l/Vithin the groove (1 abracket d is placed to register with the lower plate 0 in the up er sash when in its uppermost position. fietween the plates 0 c and c a balls C, preferably of steel and of a diameter equal to the Patented Oct. 23, 1906.

diameter of the-ways formed by the grooves 1n the sashes and the frames, are placed. These balls form pivots for the window-sashes to swing upon, which reduce the friction of the swinging to aminimum, so that the movement is accomplished with ease and smooth ness. In the lower sash, since the bracket in the sash may be raised in a manner similar to an ordinary sliding window-sash, the balls then acting simply as retainers to prevent lateral dis lacement of the sash in its frame',

0 exclude the wind, dirt, and ram, I have frame comes only below the balls, the

provided a weather-strip of metal E, which at its edges 6 e is turned outward to engage the front and rear faces of the sash and has a central vertical curved rib e which fits'into' the grooves c c when the sashes are in their vertical positions. e cut into it to pass the balls (1. When the Rib c has a circular hole sash is swung upon its pivots, the ribs e 0011-.

tacting the edges of the grooves a a, are flattened, so as to permit the swinging of the When the sash is again brought to its vertical position, the ribs 6 to exclude the elements. What I claim is 1. The combination of a window-frame having recesses upon each of its sides, a sash in the frame having recesses upon its sides registering with the recesses in the frame and forming ways therewith, balls in the ways and means for holding the balls at op osite points of the sash to act as pivots there or.

spring into the, grooves a a and resume their normal poslt on 2. The combination of a window-frame having grooves in its sides,- sashes having grooves in their sides to register-with the grooves in the window-frame and to form ways therewith, balls in the ways and suports secured to the sashes and the frames to liold the balls at opposite sides of the sashes to act as pivots therefor.

3. The combination of a window-frame having grooves semicircular in cross-section upon each of its sides, a sash in the frame having grooves semicirh'ular in cross-section istermg with the grooves upon 1ts sides re in the frame an forming cylindrical ways therewith, halls in the Ways of the diameter or" the cylindrical Ways and means for holding the balls at opposite points of the sash to act as pix ots therefor.

4. A window-frame having grooves in its sides, sashes 'in the window-frmne having grooves in their sides to register with, the grooves in the, frame, halls in the ways, plates secured upon opposite sicles of the sashes ehove and below the balls and brackets seciired in the grooves in the frames and registering with the lower of the plates in the sashes when the sashes are in their closed position.

5 The combination of a winrlmvirame having grooves in its sides, sashes in the frame having grooves in their siilos to register with the grooves 111 the trmnos :inrl l'orm-- mg Ways therewith, halls in the Ways, means for holding the halls at opposite points of the LEON RD l\. X ICABREY.

Witnesses:

W ALTER F. Milnmcr, Aex Es lictonxiiwn. 

